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Title

Candidate NGC 4649 globular clusters (Table 1)

Author(s)

Forbes, Duncan A.;  Faifer, Favio Raul;  Forte, Juan Carlos;  Bridges, Terry;  Beasley, Michael A.;  Gebhardt, Karl;  Hanes, David A.;  Sharples, Ray;  Zepf, Stephen E.

Abstract

Images were taken of NGC 4649 using the GMOS in imaging mode on the Gemini North telescope on 2002 April 10, 11 and 14. The internal Gemini program ID is 20020410-GN-2002A-Q-21/Q-13. The instrument consists of three 2048 x 4608 pixel CCDs, with a scale of 0.072 arcsec pixel−1, yielding a 5.5 x 5.5 arcmin2 field-of-view in a single pointing. We obtained three pointings close to the galaxy centre: the north-east (field No. 1), south-east (field No. 2), and east (field No. 3). The images were taken using modified Sloan g and i filters (centred at wavelengths of 475 and 780 nm, respectively). Both g and i images had exposure times of 4 x 120 s, and the subexposures were dithered to remove the gaps between the CCD chips. The seeing for the three fields were similar in the g and i filters, with 0.6, 0.7 and 1.0 arcsec for field Nos 1, 2 and 3, respectively. Table 1 gives the photometry for the candidate GCs. Table columns include x and y position in pixels, defined in a rectangular system with its origin at the galaxy centre with x positive towards west and y positive towards the north (columns Xpos and Ypos); galactocentric radius in arcsec (column RadGC); Modified Sloan i magnitude (column imag); Modified Sloan g−i colour index (g-i) and their errors (columns e_imag and e_g-i). Finally, column _RA contains position computed from Xpos and Ypos, assuming the position of M60 centre at 12:43:40.20+11:33:09.0 (right ascension part) (pos.eq.ra;meta.main); and column _DE contains position computed from (Xpos, Ypos), assuming the position of M60 centre at 12:43:40.20+11:33:09.0 (declination part) (pos.eq.dec;meta.main). The table is provided in full for download here in PDF; for other formats including ASCII and HTML, see the Harvard-Smithsonian Center for Astrophysics VizieR record here: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/MNRAS/355/608.

Publication type

Research dataset

Research centre

Swinburne University of Technology. Centre for Astrophysics and Supercomputing

Source

Originally published as supplementary material to: Forbes, D. A., et al. (2004). Gemini/GMOS imaging of globular clusters in the Virgo galaxy NGC 4649 (M60). Monthly Notices of the Royal Astronomical Society, 355(2), 608-616, The tables are also available from the Harvard-Smithsonian Center for Astrophysics VizieR catalogue, http://dx.doi.org/10.1111/j.1365-2966.2004.08333.x, Table A1 Originally published as supplementary material to: Forbes, D. A., et al. (2004). Gemini/GMOS imaging of globular clusters in the Virgo galaxy NGC 4649 (M60). Monthly Notices of the Royal Astronomical Society, 355(2), 608-616, The tables are also available from the Harvard-Smithsonian Center for Astrophysics VizieR catalogue, http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/MNRAS/355/608

Publication year

2004

FOR Code(s)

0201 Astronomical and Space Sciences;  020104 Galactic Astronomy;  970102 Expanding Knowledge in the Physical Sciences

Keyword(s)

2004 galaxy observations;  Gemini Observatory;  Globular clusters;  NGC 4649;  Star clusters;  Virgo cluster

Publisher

Blackwell

Publisher URL

http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/MNRAS/355/608

Publisher URL

http://dx.doi.org/10.1111/j.1365-2966.2004.08333.x

Publisher URL

http://hdl.handle.net/1959.3/379

Copyright

Copyright © 2004 Royal Astronomical Society. The author's original tables are reproduced here in PDF with the kind permission of the author and in accordance with the copyright policy of the publisher. For other formats including ASCII and HTML, see the Harvard-Smithsonian Center for Astrophysics VizieR record here: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/MNRAS/355/608.

Research Projects

Gemini Program, number 20020410-GN-2002A-Q-21/Q-13

Additional information

The project is a collaboration between Swinburne University of Technology; UNLP; Queen's University Canada; the University of Texas; the University of Durham; and Michigan State University.

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